What it means
Cylinder 10 pressure sensor signal jumps or drops out intermittently — connector or wiring issue. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The engine controller monitors the cylinder 10 combustion pressure sensor signal for continuity and stable behavior. This code sets when the signal repeatedly jumps or drops out instead of changing consistently with combustion, often because vibration affects a connector or harness.
Common causes
Most likely first.
- Intermittent contact at connector
- Connector with intermittent contact under vibration
- Harness routed against vibrating component
Symptoms
- Check-engine light
- Intermittent rough running or misfire
- Hesitation
- Reduced engine power
How to diagnose it
- Record freeze-frame data and watch cylinder 10 pressure-sensor live data for dropouts while noting engine speed and vibration.
- Inspect the cylinder 10 sensor connector for loose fit, moisture, corrosion, or pins that may have moved back.
- With the signal displayed, gently move the accessible cylinder 10 sensor harness to look for a matching signal interruption.
- Check for chafing or routing that lets the cylinder 10 harness touch a vibrating or hot component.
- If the wiring and connector are sound, test the cylinder 10 pressure sensor and its circuit for intermittent operation.
Common fixes
- Secure the cylinder 10 sensor connector and repair poor pin contact.
- Repair chafed or damaged wiring in the cylinder 10 pressure-sensor harness.
- Reroute and secure the harness away from vibration or heat sources.
- Replace the pressure sensor if it intermittently fails the specified test.
Can I keep driving?
Avoid high-load driving if hesitation or misfire occurs, since the signal may drop out unpredictably and reduce engine power. Arrange diagnosis soon, especially if the engine vibration is increasing.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.